<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="obj.name" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model="obj.age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="obj.sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="addBtn">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in arr" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.sex }}</td>
          <td>
            <button @click="delBtn(index)">删除</button>
            <button @click="changeBtn(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      flag: -1,
      arr: [
        {
          id: 1,
          name: "鬼师",
          age: "25",
          sex: "男",
        },
        {
          id: 2,
          name: "昆昆",
          age: "28",
          sex: "男",
        },
      ],
      obj: {
        name: "",
        age: "",
        sex: "",
      },
    };
  },
  methods: {
    addBtn() {
      if (this.flag === -1) this.arr.push({ ...this.obj });
      this.arr.splice(this.flag, 1, { ...this.obj });
      this.obj.name = "";
      this.obj.age = "";
      this.obj.sex = "";
      this.flag = -1;
    },
    changeBtn(index) {
      this.obj = { ...this.arr[index] };
      this.flag = index;
    },
    delBtn(index) {
      this.arr.splice(index, 1);
    },
  },
};
</script>
